Well-pulling machine.



PATENTED JAN. 2, 1906. 0. D. KRAFT & L. W. FBTZER.

WELL PULLING MACHINE.

APPLICATION FILED JUNE 9. 1905.

2 SHBETS-SHEET 1.

2 SHEETS-SHEET 2.

PATENTED JAN. ,2, 1906.

0. D KRAFT & L. W. FETZER. WELL PULLING MACHINE.

APP-LIGATION FILED JUNE 9, 1905.

agW-MW UNITED STATES PATENT OFFICE.

OLIVER D. -KRAFT AND LOUIS W. FETZER, OF FINDLAY, OHIO.

WELL-PULLING MACHINE.

Specification of Letters Patent.

Application filed June 9, 1905- Serial No. 264,520.

Patented J an. 2, 1906.

To aZZ whom it may concern:

Be it known that we, OLIVER D. KRAFT and Lows W. FETZER, citizens of theUnited States, residing at Findlay, in the county of Hancock and Stateof Ohio, have invented new and useful Improvements in Well-PullingMachines, of which the following is a specification.

- Our invention relates to well-pulling machines, and is especiallyadapted for removing tubes, sucker-rods, or casings from oil-wells andfor bailing or cleaning wells.

One object of this invention is to provide a novel and highly usefuldevice of this character which can be transported from place to place byits own power and which is cheap to manufacture, simple-of construction,durable, and eflicient.

Another object is to provide a windingdrum having varying diameters,whereby a cable can be caused to be wound thereon at varying speedswithout increasing the speed of rotation of said drum.

A still further object is to provide means for reversing the directionof rotation of the drum, said means being readily removable to permit ofthe substitution of means to cause the drum to revolve in-normaldirection at an increased speed.

The invention consists in the construction, combination, and arrangementof parts more fully hereinafter described and claimed, and

illustrated in the accompanying drawings,

which disclose the preferred form of our invention, and in which Figure1 is a side elevation of a machine constructed in accordance with ourinvention. Fig. 2 is a top plan view thereof. Fig. 3 is a sectional viewon the line 3 3, Fig. 2,

looking in the direction of the arrow. Fig- 4 is a sectional view on theline 4 4 looking in the direction of the arrow. Fig. 5 is a detailperspective view of the lever for operating the gears for reversing thedirection of rotation of the drum, and Fig. 6 is a detail perspectiveview of the gear for increasing the speed of the drum.

Referring to the drawings by referencenumerals, similar numeralsdesignating similar parts in the several figures, 1 1 designate sidemembers, and 2 2 end members, suitably united and braced to provide aframe for the machine. Axles 3 3 are secured to the under side of saidframe and carry supportingwheels 4 and 5, the wheels 5 being traction-Wheels andthe wheels 4 steering-wheels of I well-known constructions.Supporting-bars 6 6 are secured to the side bars 1 1 at a point adjacentthe rear end of the frame, and these bars are adapted to carry an engine7 of any well-known explosive type. A stud-shaft 8 is suitably journaledon the frame in advance of the engine 7 and is provided with asprocket-wheel 9. A sprocket-wheel 10 is keyed to the shaft, upon whichare j ournaled the wheels 5 5, and a chain 11 is mounted upon saidsprocket-wheels 9 and 10. The drive-shaft 12 of the engine 7 is providedwith a sprocket-wheel 13, and the stud-shaft 8 is provided with anothersprocket-wheel14. Mounted upon said sprockets 13 and 14 is a chain, (notshown,) whereby the machine may be propelled from place to place.

A drum 15 is journaled in bearings 16 near the forward end of the frameand is rotated from a shaft 17 by means of a chain 18. This shaft 17receives motion from the driveshaft 12 by means of a chain 19, which ismounted upon the pulley 13 after the removal of the chain adapted topropel the machine. The rotation of the drum 15 is controlled by meansof a clutch element 20, mounted upon the shaft 17, this clutch beingoperated by means of a hand-lever 21, which is pivotally secured to theframe of the machine, as at 22. The movable member of the clutch 20 hasconnection with a lever 23, which is secured to the frame, as at 24, andinterposed between the free end of said lever 23 and the lever 21 is alink-bar 25. It is apparent that if the lever 21 is moved laterally omthe frame of the machine the clutch member 20 is operated to stop therotation of the drum 15 and that if it is moved in reverse '15 and assedover a pulley carried by the derrickrame. (Not shown.) The depend ingend of the cable carries a suitable device for engaging a casing ortube. After the casing or tube has been engaged the lever 21 is moved tocause the rotation of the drum 15, said drum being rotated until thecasing or tube has been raised above the surface. Af

ter the casing has been thus withdrawn it is desirable to suspend thesame to permit one section to be removed from the other. In order toaccomplish this, we rovide a brake band 29, which has one on secured tothe frame, then extended over an annular flange 30, carried by the drum15, and thence has its free end secured to a rock-shaft 31, adapted tobe operated by means of a hand-lever 32, situated adjacent to the lever21. The brake-band 29 will be normally retained out of engagement withthe disk 30, and immediately after the pressure upon the lever 32 isreleased the drum will be free to rotate, this being done, however, onlyafter the section has been unscrewed from the remaining sections and isready to be removed. I/Vhen it is desired to remove the detachedsection, it is essential that the direction of rotation of the drum bereversed and the speed be increased to rapidly unwind the cable. Toaccomplish this, we provide adjustable gears 33 and 34, adapted tocontact, respectively, with a gear 35 upon the shaft 17 and a gear 36upon the drum 15. These gears 33 and 34 are carried by a frame 37, whichis slidably mounted in standards 38, carried by the machine-frame, bymeans of lugs 39 upon said frame 37 engaging in ways 40 in saidstandards 38. To the lower end of the frame 37 is attached an arm 41,projecting below the under surface of the machine frame and providedwith an eye 42. Surrounding said arm 41 and interposed between ashoulder 43 thereon and the upper surface of the machine-frame is aspring 44, which is adapted to retain the gears 33 and 34 normally outof engagement with the gears 35 and 36. A crank-arm 45 is journaled inone of the side bars 1 and has one end of its arm 46 operatively andloosely engaging the eye 42. A lever 47 has connection with the otherarm, whereby said crank-arm may be manipulated to depress the frame tobring the gears 33 34 into engagement with the gears 35 36 for thepurpose hereinbefore stated. After one section has been removed and toelevate the remaining sections the same steps before stated are repeatedAt times it is desirable to cause the cable to be wound upon the drum 15at a greater rate of speed than the speed of rotation of the drum, andto accomplish this we provide the drum with an additionalwinding-surface 48, which has a greater diameter than thewinding-surface 28. To increase the speed of the winding of the cable,the cable is passed on to the winding-surface 48 in a manner that isapparent. The drum 15 is provided with another winding-surface 49,separated from the winding-surface 28 by means of an annular flange 50and upon which the loose end of the cable is adapted to be wound. Thenormal speed of rotation of the drum shaft 17, and to increase the speedof rotation of the drum 15 equal to that of the shaft 17 a gear 51 issubstituted for the gears 33 and 34 and which is journaled in a yoke 52,attached to the upper end of the arm 41. This yoke 52 is also providedwith lugs 53. When using either the gears 33 and 34 or the gear 51, theclutch is thrown out of engagement, whereby the drum 15 is rotateddirectly through said gears.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and mode of operation of theinvention will be understood without a further extended description.

Changes in the form, proportions, and minor details of construction maybe made within the scope of the invention without departing from thespirit or sacrificing any of the advantages thereof.

Having thus fully described the invention, what is claimed as new is- 1.In a machine of the class set forth, the combination with a drive shaftprovided with a gear, a drum provided with a gear, a power-transmittingmember carried by the drum and the shaft, a clutch member carried by theshaft by means of which said powertransmitter can be thrown into and outof operation, and verticallyadjustable gears adapted to be brought intoengagement with the said first-named gears, whereby the directlon ofrotation of the drum may be changed, said gears being freely removable.

2. In a machine of the class set forth, the

said first-named gears, whereby the direction of rotation of the drummay be changed.

3. In a machine of the class set forth, the combination of a drive-shaftprovided with a gear, a drum provided with a gear, a powertransmittingmember carried by the drum and the shaft, a clutch member carried bysaid shaft by means of which thepower-transmitter can be thrown into andout of operation, a frame provided with gears adapted to be brought intoengagement with said firstnamed gears, whereby the direction of rotationof the drums may be changed, and means for retaining the last-namedgears normally out of engagement with the first-named ears.

b 4. In a machine of the class set forth, the combination with adrive-shaft provided with a gear, a drum provided with a gear, apower-transmitting member carried by the drum and the shaft, a clutchmember carried 65 15 is less than the speed of the rotation of the i bysaid shaft by means of which the power- 1 0 transmitter can be throwninto and out of operation, vertically-adjustable gears adapted to bebrought into engagement with said firstnamed gears whereby the directionof rotation of the drum may be changed, and means for retaining saidlast-named gears normally out of engagement with said first named gears.

5. In a machine of the class set forth, the combination with a driveshaft provided with a gear, a drum provided with a gear, a power etransmitting member carriedv by the drum and said shaft, a clutch membercarried by said shaft to throw said power-transmitter into and out ofoperation, and verticallyadjustable gears adapted to be brought intoengagement with said first named gears, whereby the direction ofrotation of the drum may be changed.

6. In a machine of the class set forth, the combination with a driveshaft provided with a gear, a drum provided with a gear, apower-transmitting means interposed between the drum and said shaft, aclutch carried by said shaft and adapted to control saidpower-transmitting means, means for operating said clutch, avertically-adjustable gear adapted to be brought into engagement withsaid first-named gears to change the direction of rotation of the drum,means for operating said last-named gear, a brake-band for said drum,and means for operating said brakeband.

7. In a machine of the class set forth, the

combination with a drive-shaft provided 5 OLIVER D. KRAFT. LOUIS W.FETZER.

Witnesses REED METZLER, H. W. PLUMMER.

